Outer pseudoring in the galaxy

Details Outer pseudoring in the galaxy Outer pseudoring in the galaxy

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006astl...32....7m&link_type=abstract

Astronomy Letters, vol. 32, Issue 1, p.7-13

Astronomy and Astrophysics

Astronomy

6

Pacs Numbers 98.20.Af - 98.35Df - 98.35.Hj - 98.35.Jk - 98.52.Nr

Scientific paper

The kinematics of the Sagittarius (R = 5.7 kpc),Carina (R = 6.5 kpc), Cygnus (R = 6.8 kpc), and Perseus (R = 8.2 kpc) arms suggests the existence of two spiral patterns in the Galaxy that rotate with different speeds. The inner spiral pattern that is represented by the Sagittarius arm rotates with the speed of the bar, b = 60 ± 5 km s-1 kpc-1, while the outer spiral pattern that includes the Carina, Cygnus, and Perseus arms rotates with a lower speed, s = 12 22 km s-1 kpc-1.The existence of an outer slow tightly wound spiral pattern and an inner fast spiral pattern can be explained by numerically simulating the dynamics of outer pseudorings. The outer Lindblad resonance of the bar must be located between the Sagittarius and Carina arms. The Cygnus arm appears as a connecting link between the fast and slow spiral patterns.

Affiliated with

Also associated with

No associations

Rating

Outer pseudoring in the galaxy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Outer pseudoring in the galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Outer pseudoring in the galaxy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1287118